silverlight 从一个不规则图形变成另一个不规则图形的动画

[木流日]

在silverlight里想实现一个动画。这个动画效果就是从一个不规则图形变成另一个不规则图形。
一个不规则几何图形的形状是 <Path x:Name="coverage1" Width="144" Height="60" Stretch="Fill"
Data="F1 M 191.246,23.7614C 196.974,21.3376 252.17,18.8035 276.613,18.8035C 301.056,18.8035 360.35,21.847 364.734,24.753C 369.119,27.6589 369.339,28.7607 370.351,31.3627C 372.478,33.1402 374.299,72.7613 374.299,107.206C 374.299,112.46 316.899,122.449 275.291,122.449C 233.683,122.449 177.698,111.925 177.698,107.546C 177.698,64.5703 181.333,34.2265 184.637,30.3712C 187.233,26.2886 187.067,26.5778 191.246,23.7614 Z " UseLayoutRounding="False" Margin="264,192,232,211">


另一个几何形状是
<Path Width="144" Height="60"
Data="F1 M 197.8,31.4281L 353.783,31.4281C 357.464,31.4281 360.449,34.4126 360.449,38.0941L 360.449,194.077C 360.449,197.759 357.464,200.743 353.783,200.743L 197.8,200.743C 194.118,200.743 191.134,197.759 191.134,194.077L 191.134,38.0941C 191.134,34.4126 194.118,31.4281 197.8,31.4281 Z " UseLayoutRounding="False" RenderTransformOrigin="4.082,0.667">